On February 12, Bill Bradford wrote: I have one, I use it regularly, and I love it. Yes it's ten years old...but it's a piece of test equipment, not a computer, so it's only getting "a little" old at this point. Newer units are a bit more flashy and flexible, but those newer units also tend to be Windows PC laptops running network analyzer software that some college schmuck threw together in Visual Basic...and thus tend to blow up a lot. The HP4972 isn't a Windows PC in disguise...it's an honest piece of application-specific- engineered test equipment that does its job very well. I have the documentation, and I'd be willing to loan it to you. I also (obviously) have the software...I'm not sure how to copy it out of the machine, but if we can figure that out, I'll help you get yours running. FYI they tend to go for anywhere between $500-$1000 (working) on the surplus market, or up to about $2500 in the "commercial" used test equipment market. -Dave McGuire